Finding the Fourth Proportional to 107,735.50, 161,451.91 and 85,146.83

Step by Step Solution

1. Step 1: Write the proportion equation
   107,735.50 : 161,451.91 = 85,146.83 : x
2. Step 2: Convert to fraction form
   107,735.50/161,451.91 = 85,146.83/x
3. Step 3: Cross multiply
   107,735.50x = 161,451.91 × 85,146.83
4. Step 4: Simplify right side
   107,735.50x = 13,747,117,100.95
5. Step 5: Solve for x
   x = 13,747,117,100.95/107,735.50
6. Step 6: Final answer
   x = 127,600.63